Moistening attachment for dental-engine handpieces



I. A. BURNETT. MOTSTENING ATTACHMENT FOR DENTAL ENGINE HANDPIECES. APPLICATION FILED MAY 1. 1920.

1,345,579. Patented July .1 1920b.

Ina va. ennnn'r'r, or enroaeo, ILLINOIS}.

morsrnmns ArracI-nannrron nnn'ran-nnernn nannrrnens Specification cf Letters Patent. Patented July M99269,

Application and May 1, 1m. Serial no. erases.

To eZZ whom it may concern; H a

Be it known that 1,111.4; A. BURNETT, a citizenof the United States, residing at Chi? cago, in the county otCook and State of Illinois, have,in entedcertain new and us ful ImprovementsinfMoistening Attachmerits foi: @Dental l lngine Han d1: ieces, of which the following isa spe cification.

, Mytpresent intentiongrelatestoimpro fe merits in moistening, Iattachment's for dental enginehand pieces, or a typesimilar to that disclosed in Letters Patent 1,318,351, issued tome on, ,Oct0loer14, 1919, anfdhas for one or; {its objects to greatly improve the corn struction and eiiiciency I of such attachments made according to, aforesaid Letters I Patentand to proyidela moistening attach ment which shall hernore compactlyconstructedjthanthatset forth in mysaid Letters, Patent, or, so [made at its operative end as to obstruct thejyision j of the operator to aless swee h ar s heretofore been accoinplished by deyicesoif like character.

Further objectsand advantages ofthe in Vention are similar} to those set iorth in my aforesaid lietter'sdfatent, and a are follows To Proyide lanextrernely, simple and rention-w T ,50

inexpensive moistening' attachment for dentalengine hand p eces, wh ch can he nstantly attached thereto or removed therew from, and ofsuch construction and arrangelllfillll Qf its parts thatwater in the desired quantities cents snppliedf in drops or jets (as may hefdesired), to thefg'rindingr disks m5 stones, lnirs, (hill Purpose of lreehing the ingtheii'temperature Anotheroloject is to so construct the attachnient that wheuapplied to the; hand piece it willfit the same in lsuch a wayas to prevent w er, front entering the sa d p ece, and thereby causing corrosion or rusting oi its parts. i

same cool or reduc;

Other, objects adyahtages oi the vention will be disclosed in the following cl s p i aed exp na n t a drawing, which serves to illustrate an embodiment of the in Figure 1 a, plan View of a dental engine handpiece andits mount, showing oneform of L l y p oved d s ina t h ent or the handpieee mounted in. operative posi *t onthereon. i

Fig; alias, View in side ele'vationetlihe and the like, for the stride and clampthe hodir parts but showingthe attachment in longiresponding parts throughout the diflferent views of the drawings. a 4 The reference numeral 6 designates the dental engine hand piece, which may he made of the well known or standard con struction, the front end of which is provided with a forwardly tapered and centrally apertured head 7 in which the mandrel or shaft Set the tool operated by the engine is located and may he held in the customary mannenh 1 ln 1 the mandrel is shown asbeing provided with a grinding stone 9 and in Figs. 2 and 3 said mandrel is shown as being providedwith a grinding disk, but it willloe understood that other kindsoftools, such as burs, drills, and the like may he e1nployedL A sleeve or tubular member 10, having internal screw-threads in the rear portion of'its cavity is mounted at the front end Of the head 7 of the hand piece, which head terminates at its free end abruptly or with anend wall 11 disposed. at a right, angle to the axial line of said head. y r

Located longitudinally withrespect to the sleeve or tubularmember 10 and merged therewith awater delivery tube 12 which has its front portion reduced and extended slightly in front of the reduced front portion13 oi the member 10 as is clearly shown at 14in Figs. land 2 er the drawingsfto which Views the abovedescription is pan ticularly directed, a a

in Fig. 2 it will he clearly seen and readily understood that in the construction illustrated in said figure as well as in Fig. 1, the water delivery tube 12 has an independent passageway from that of the member or sleeve 10, and that said delivery tube is ex tended rearwardly from the upperr portion of thememher 10 and is provided near its rear endwith, a pair of curved jaws "or clamping members 15 which are adapted to a of the hand piece 6 some distance rearward y of its; headlj The ire ' water deliverytube12 is also provided between the jaws 15 and the head 7 with a pair of curved clamping jaws '16 adapted to stride and clampa portion of the hand piece p 'By reference to 2 it will be seen that tudinally .With an opening lSthi-oiigh which the-mandrel Sis e'fxtended into the front end nearerits head in order tomore firmly -se-' cure the attachment in place against the latter.

the rear portion of the sleeve or member 10 has located, therein asleeve 17 which by preference is made ofrubber, but may be made of any suitable resilient material. This sleeve is'provided centrally and longioi" the hand piece 6 where it will be engaged by fa' h uek carried by said hand piece, which chuck ienotlshowh but maybe of the ordinary or usual construction. [The tubular member 10is by preference provided in the rear portion ofits cavity with screw-threads in order that the orificefd sleeve 17 may "be "screwed therein and held against rotation, but it will "be iinderstood that I do not wish rest against the inner, surfaces of the walls of the memher'io and thus will be prevented longitudinal Inove'Inennand so held by the clamps-for jaws and '16 that 'it will rest against the. front end of the .;tap'eied head 7 and closely around the mandrel 8 in such a manner as to exclude the possibility of v water discharged from the delivery tube 12 against the tool carried. by the inandiel working or passing back into the hand piece thereby causing its internal parts 'to be mpaired by rust or corrosion, V The rear end of he water deli\ ie'ry tube '7 is preference"provided with an, annular enlargementfl fi over which is -fitt ed a flexible tube leading to a compressible handjbulb 21 containing water, a d whi h V canbe conveniently held in the palm of'the' hand of] the Operator while the instrument may. 'be' held with the thumb and forefingers applied to the attachment about its juncture with the front end of} the hand iece and properly vInanipulated with but little obstruction to his vision by reason of the compact. form of the front jportion of delivery'tube1-2'with the member '10. I

In Fig ge and 4 of the drawings'is shown 'a' modification in the construction of: the

the attachment produ ed by mergi g. the

- attachment, whioh'eohsiste in providing the fIOfit. end of the'tubular meinb'er -m with one .ormo e cut-away .portions 22 or slits and inuniti'ng the pa eag wey 23 with the passageway 24 of the n-ember 10 rearwardly of the front end of the latter, instead of making said 'mssageways independent of each other as in the construction illustrated in Figs. 1 and 2 and above described. 'Otherwise,- the attachment is of the same construction as that shown in Figs.

-1 and 2 and above described.

ried in the palm of the hand, that is used for operating the hand piece, and that by reason of the closure provided by the sleeve 17 water will be absolutely prevented enterin' the hand piece.

p n the constructiol'i shown in Figs. 1 and 2. the front and reduced portion 14 of the water delivery m mber 12 )rojects a slight distance forwardly of the trout end of the member. 10 so as to almost contact with the stone 9 or other tool, thereby affording means for applying water directly to the tool and without danger of dri pin off at the free end of the reduced portion of the water delivery tube as might occur if the same were not forw rdly extended as set forth. r

. The modified construction shown in Fi s. 3 and 4; has been found particularly usei ul in affording means for directly discharging water from the delivery tube to the tool in instances where the mandrel 8 is rearwardly tapered adjacent the tool, and fits so closely within'the reduced front portion 13 of the member 10 as to prevent the discharge of water. By'providing the front end of the reduced portion"13 with the spaced apart slits or cutout portions 22, it is evident that the above mentioned objection or difiiculty will be overcome. v v Infthe drawings the hand piece is shown in connection with a mount or portion 25 of the engine, which of course'jorms no part of the present invention, and need not be herein described.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is I 1. In a moiste'ning attachment for dental engine hand pieces, the combination with a tubular member, of a resilient sleeve located in the rear portion of said member and dapted. at its rear end to contact with the front end of said hand piece, sai sleeve havin a longitudinal opening registering witht 1e opening in the hand piece and with the opening of the tubular member in which it is located, and means longitudinally 19o mounted on said tubular'member and extendedalong the same for the discharge of Water at its front portion near the front end of said tubular member.

2. In a moistening attachment for dental engine hand pieces, the combination With a tubular member, oi a reslhent sleeve located in the rear portion thereof against rotation 1 and adapted at its rear end to contact with the'front end of said hand piece, said sleeve 10 having a longitudinal opening registering With the opening in the hand piece and with the opening in the tubular member in Which it is located, and a Water delivery conduit located longitudinally on and with respect 15 to the tubular member and merged therewith at its front portion.

IRA A. BURNETT. 

